How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 9/29100.0*Chance in playoffs100.0*Average seed
Charlotte 2 Pittsburgh 2 -2.4
-0.2
Penn 2 Charlotte 2 Out
-0.1
North Carolina 3 Richmond 2 -1.0
-0.1
Nashville 1 New York II 1 +0.5
Ottawa 0 Bethlehem 0 +0.4
Atlanta II 1 Tampa Bay 1 -0.0
Week of 10/5100.0*Chance in playoffs100.0*Average seed
Tampa Bay 1 Charlotte 2 +0.6
Louisville 2 North Carolina 1 +0.2
Penn 1 New York II 3 +0.1
Week of 10/13100.0*Chance in playoffs100.0*Average seed
Charlotte 1 North Carolina 3 -0.7
Bethlehem 1 Tampa Bay 0 +0.6
Points
Chance Will Make Playoffs